Updated

An Oregon man who stripped naked during a security check at Portland International Airport says he expects the Transportation Administration Security Administration to uphold its $1,000 fine at a hearing Tuesday,

John Brennan, of Portland says he plans to appeal in federal court to force a review of the constitutionality of TSA searches and inspections.

Brennan, 50, made headlines last year when photos showing him standing near a metal detector without any clothes on went viral.

He was fined for disrupting the screening process. Brennan said he was cooperative but stripped to show he wasn’t hiding anything after a screener reported finding traces of nitrites, which could indicate an explosive.

“I totally support airport screening,” Brennan told OregonLive.com. “I just don’t want ti to e at the expense of my constitutional rights.”

He was acquitted of charges in county court.

“I’ve had this could hanging over my head … for months and months,” Brennan told OregonLive.com.

Brennan says he hopes his case leads to more effective, non-invasive procedures.

Click for more from OregonLive.com.

The Associated Press contributed to this report.